Tag: Ab jenkins

Morrison 1990 ZR-1 Speed Record: Aver 24-Hour 174.885-MPH! – VIDEO

Published on by Scott

Race-prepared, stock 1990 ZR-1 Shatters a 50 Year 24-Hour Speed Record

Illustration by: K. Scott Teeters

Dateline: 5.22.17 (This story first appeared in the May 2017 issue of “Vette Vues”) – Racing Corvettes used to have a long history of durability issues. There are many reasons why Corvette racecars had durability issues, but one of the biggest is easy horsepower. It’s always been relatively easy to get a lot of power out of a small-block or big-block Chevrolet engine. If a builder is more oriented towards drag racing, the temptation for an extra 50-horsepower is just too tempting for many builders. That’s fine for drag racing where a car is stressed to the max for a matter a seconds. But in endurance racing, you have to finish to win.

From the perspective of the mid-1980s, the new C4 Corvette was light years ahead of the previous two-generation Corvettes. In the mid-1980s Corvettes were so fierce in SCCA Showroom Stock racing that after two years they were kicked out for being too fast! So, the factory-built Corvette racecars duked it out in their own series, The Corvette Challenge. Breakage with the C4 cars wasn’t much of an issue thanks to the much-improved structure and suspension, plus the cars weren’t powered by massive, torque-monster big-blocks. Continue reading “

Morrison 1990 ZR-1 Speed Record: Aver 24-Hour 174.885-MPH! – VIDEO” →

March 1 & 2, 1990: 1990 ZR-1 Corvette Shatters 50-Year Speed Record!!!

Published on by Scott

Dateline: 7.20.11
Try to imagine driving a loaded for bear, 1990 ZR-1 Corvette for 24-hours at an AVERAGE speed of 175.885-mph!

Racing Corvettes used to have a long history of durability issues. There are many accounts of Corvette racers setting track records and winning pole positions, only to have parts breakage put their cars out of the race. The success of the Showroom Stock and the Corvette Challenge cars proved that the new C4s had what it took to win long races. So it was only a matter of time before someone tested the new ZR-1 under racing conditions. Enter Morrison Motorsports.

On March 1 and 2, 1990, the Morrison Motorsports prepared ZR-1 Corvette shattered the 50-year old, 24-hour speed record with an astonishing average speed of 175.885-mph with a “near-stock” ZR-1 Corvette! The details of the ZR-1 speed machine are a genuine testimonial to the quality of the new ZR-1.

In 1940, David, “Ab” Jenkins set the 24-hour speed record with his “Mormon Meteor III” racer. The huge 5,000-pound machine was designed by Augie Duesenberg and used a 850-hp, 27.5-litre aircraft engine! In 1940 Ab nailed the record with an average 24-hour speed of 161.18-mph. The record stood for 50 years. Many attempted to break the record, and all failed… until the ZR-1 arrived. Continue reading “March 1 & 2, 1990: 1990 ZR-1 Corvette Shatters 50-Year Speed Record!!!” →